Power supply device and aerosol generating device

ABSTRACT

Disclosed is a power supply device for an aerosol generation device. The aerosol generation device includes an atomizer and the power supply device. An airflow passage is formed inside the atomizer. The power supply device includes a power supply main body and a sensor. A sensing passage, a filtering chamber and a communication hole are provided inside the power supply main body, the sensing passage and the filtering chamber are separated, and the communication hole is in communication with the sensing passage and the filtering chamber; the sensor is arranged in the sensing passage; a connecting end used for being connected to the atomizer is provided at one end of the power supply main body, and a through hole is provided in the connecting end. The power supply device can intercept solids and/or liquids entering the sensing passage from the communication hole and influencing the detection of the sensor.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure is a continuation-in-part of international Patent Application No. PCT/CN2021/081534, filed on Mar. 18, 2021, which claims priority to Chinese Patent Application No. 2020203481117.X; filed on Mar. 19, 2020. All of the aforementioned patent applications are hereby incorporated by reference in their entireties.

TECHNICAL FIELD

The present disclosure relates to the technical field of simulated smoking, in particular to a power supply device and an aerosol generating device using the power supply device.

BACKGROUND

The aerosol generating device includes an atomizer and a power supply device, the atomizer includes a liquid storage member and an atomizing assembly received in the liquid storage member. The liquid storage member is configured for storing aerosol-forming substrate and supplying the aerosol-forming substrate to the atomizing assembly. The atomizing assembly heats the aerosol-forming substrate supplied by the liquid storage member under the electric driving of the power supply device, the aerosol-forming substrate is heated to form smoke that flows out of the smoke outlet for the user to inhale.

The existing power supply device automatically controls the turning on or turning off of the aerosol generating device by arranging a sensor in the sensing passage to sense the user's suction signal. When the atomizing assembly stops heating the aerosol-forming substrate, during a relatively long placement, the atomized smoke gradually cools and liquefies to produce condensate; when the condensate falls due to its own gravity, it can pass through the assembly gap of various components of the atomizer and flow to the sensor through the sensing passage, thereby affecting the detection of the sensor.

SUMMARY

Based on this, it is necessary to provide a power supply device and an aerosol generating device using the power supply device in order to solve at least one of the above problems.

A power supply device for an aerosol generating device is provided. The aerosol generating device includes an atomizer and the power supply device, an airflow passage is formed inside the atomizer. The power supply device includes a power supply main body and a sensor. A sensing passage, a filtering chamber and a communication hole are provided in the power supply main body. The sensing passage is separated from the filtering chamber, the communication hole communicates with the sensing passage and the filtering chamber. The sensor is disposed in the sensing passage, the sensor is configured to detect physical characteristics and suction signals of gas in the sensing passage. One end of the power supply main body is provided with a connecting end, the connecting end is configured to connect with the atomizer. A through hole is provided through the connecting end, the through hole communicates with the filtering chamber and the airflow passage. The filtering chamber is configured for preventing solids and/or liquids from entering the sensing passage through the communication hole.

Further, the power supply main body includes a housing, and a sealing member and a bracket provided in the housing. The sealing member is the connecting end, and the through hole is provided through the sealing member. The sensing passage is provided inside the bracket, the bracket is arranged between the sealing member and the sensor. The communication hole is provided through the bracket, the communication hole is staggered from the through hole in an axial direction of the atomizer. The filtering chamber is formed by a space between the bracket and the sealing member.

Further, a filter element is provided in the filtering chamber, and the filter element is made of a material that is easy to intercept solids and/or liquids.

Further, the bracket is provided with a barrier wall, the barrier wall protrudes upward from the bracket, a space defined by the barrier wall is a liquid storage cavity, the liquid storage cavity is aligned with the through hole in the axial direction of the atomizer.

Further, the barrier wall includes a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion protrude upward from the bracket, the space between the first limiting portion and the second limiting portion forms the liquid storage cavity.

Further, an upper end of the bracket is provided with an upper plate located between the sealing member and the sensor, the first limiting portion and the second limiting portion protrude upward from the upper plate toward the sealing member, the communication hole is provided through the upper plate, the liquid storage cavity is formed by the space between the upper plate, the first limiting portion and the second limiting portion.

Further, the liquid storage cavity is located directly under the through hole, the communication hole is located at one side of the liquid storage cavity.

Further, the sealing member is connected to the upper end of the bracket, and a side wall of the sealing member abuts against an inner wall of the housing.

Further, a liquid absorbing element is provided in the liquid storage cavity.

Further, a liquid absorbing element is provided in the liquid storage cavity, the liquid absorbing element is made of a material with good adsorption properties.

Further, the power supply device further includes a USB charging structure provided on the housing, and a controller, a PCB and a power source provided in the housing, the USB charging structure and the PCB are electrically connected to the power source, the controller is mounted on the PCB, the controller is electrically connected to the sensor.

An aerosol generating device includes the power supply device as described above and an atomizer electrically connected to the power supply device.

Further, the atomizer includes a liquid storage assembly and an atomizing assembly, the liquid storage assembly includes a liquid storage member and a venting member provided in the liquid storage member, the liquid storage member is provided with a smoke outlet hole that communicates with the outside environment, an inner cavity of the venting member is a smoke outlet passage that communicates with the smoke outlet hole, the atomizing assembly is arranged in the liquid storage member, an atomizing chamber is provided in the atomizing assembly, the atomizing chamber communicates with the smoke outlet passage.

Further, an inner cavity of the liquid storage member is a liquid storage chamber configured for storing aerosol-forming substrate, the atomizing assembly includes an atomizing upper cover disposed in the liquid storage member, the atomizing upper cover is provided with a liquid guiding hole that communicates with the atomizing chamber and the liquid storage chamber.

Further, the atomizing assembly further includes a base connected with the liquid storage member and a heating structure installed on the base, the heating structure includes a liquid absorbing member and a heating member, the heating member is in contact with the liquid absorbing member, the space in which the heating member heats and atomizes the aerosol-forming substrate is the atomizing chamber, the base is provided with a flow-guiding hole that communicates with the atomizing chamber and the sensing passage.

In the power supply device of the present disclosure and the aerosol generating device having the power supply device, since the sensing passage is separated from the filtering chamber, the communication hole communicates with the sensing passage and the filtering chamber, the through hole is provided through the connecting end, and the through hole communicates with the filtering chamber and the airflow passage, the filtering chamber can intercept solids and/or liquids from entering the sensing passage through the communication hole; therefore, when the solids and/or liquids fall from the airflow passage, the solids and/or liquids in the aerosol generating device can be prevented from flowing into the sensing passage through the filtering chamber, so as to prevent the solids and/or liquids from flowing into the sensing passage and contacting with the sensor to cause the circuit of the sensor to be short-circuited, thereby improving the service life of the sensor.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is the cross-sectional view of the aerosol generating device of the present disclosure;

FIG. 2 is a partially enlarged view of part A of the aerosol generating device shown in FIG. 1 ; and

FIG. 3 is a cross-sectional view of the atomizer of the aerosol generating device shown in FIG. 1 .

The reference signs in the attached drawings are:

aerosol generating device 100 atomizer 10 sealing member 22 housing 211 through hole 221 bracket 212 first limiting portion 2122 second limiting portion 2123 sensor sealing member 26 liquid storage assembly 101 smoke outlet passage 12 liquid storage member 13 liquid storage chamber 131 smoke outlet hole 132 heating structure 17 liquid absorbing member 171 electrode contact member 162 sealing ring 163 filtering chamber 2112 power supply device 20 power main body 21 sensing passage 2111 sensor 23 communication hole 2121 power supply 24 liquid storage cavity 2124 USB charging structure 25 atomizing assembly 102 liquid sealing member 18 venting member 14 atomizing upper cover 15 liquid guiding hole 151 base 16 heating member 172 flow-guiding hole 161 barrier wall 2125 atomizing chamber 173

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

In order to facilitate the understanding of the present disclosure, the present disclosure will be described in details with reference to the accompanying drawings. Preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make a more thorough and comprehensive understanding of the disclosed contents of the present disclosure.

It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to be “connected” to another element, it can be directly connected to the other element or an intervening element may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terms used herein in the description of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The term “and/or” as used herein includes any and all combinations of one or more of the associated listed items.

Please refer to FIGS. 1-3 , the present disclosure provides an aerosol generating device 100, the aerosol generating device 100 includes an atomizer 10 and a power supply device 20. When the atomizer 10 is electrically connected to the power supply device 20, the atomizer 10 heats the aerosol-forming substrate under the electric drive of the power supply device 20 to atomize the aerosol-forming substrate into smoke.

It should be noted that “axial direction” refers to the connection direction of the atomizer 10 and the power supply device 20, “radial direction” refers to a direction perpendicular to the “axial direction”. “Lower end” refers to the end of each component or part of the atomizer 10 that is close to the power supply device 20 in the axial direction of the atomizer 10. “Upper end” refers to the end of each component or part of the atomizer 10 that is away from the power supply device 20 in the axial direction of the atomizer 10. “Upper end surface” refers to the flat and/or curved surface of the upper end, “lower end surface” refers to the flat and/or curved surface of the lower end.

An airflow passage is formed inside the atomizer 10. The power supply device 20 includes a power supply main body 21 and a sensor 23. A sensing passage 2111, a filtering chamber 2112 and a communication hole 2121 are provided in the power supply main body 21. The sensing passage 2111 is separated from the filtering chamber 2112, and the communication hole 2121 communicates with the sensing passage 2111 and the filtering chamber 2112. The sensor 23 is disposed in the sensing passage 2111, the sensor 23 is configured to detect the physical characteristics and suction signals of the gas in the sensing passage 2111. One end of the power supply main body 21 is provided with a connecting end, the connecting end is configured to connect with the atomizer 10. A through hole 221 is provided through the connecting end, the through hole 221 communicates with the filtering chamber 2112 and the airflow passage, the filtering chamber 2112 is configured for preventing solids and/or liquids from entering the sensing passage 2111 through the communication hole 2121.

In this embodiment, the power supply main body 21 includes a housing 211, and a sealing member 22 and a bracket 212 provided in the housing 211. A controller electrically connected to the sensor 23 is provided in the housing 211. The sealing member 22 is the connecting end, and the through hole 221 is provided through the sealing member 22. The sensing passage 2111 is provided inside the bracket 212. The bracket 212 is arranged between the sealing member 22 and the sensor 23. The communication hole 2121 is provided through the bracket 212, the communication hole 2121 is staggered from the through hole 221 in the axial direction of the atomizer 10. The filtering chamber 2112 is formed by the space between the bracket 212 and the sealing member 22, thereby preventing solids and/or liquids from flowing into the sensing passage 2111 from the communication hole 2121.

It can be understood that, in another embodiment not shown, the arrangement positions of the sealing member 22 and the bracket 212 can be interchanged, That is, the bracket 212 is the connecting end, the through hole 221 is provided through the bracket 212, the sensing passage 2111 is provided inside the sealing member 22, the sealing member 22 is arranged between the bracket 212 and the sensor 23, and the communication hole 2121 is provided through the sealing member 22.

Specifically, when the atomizer 10 heats the aerosol-forming substrate, the temperature of the smoke formed by the atomizer 10 heating the aerosol-forming substrate is relatively high, and some of the smoke may not be sucked out. After the atomizer 10 stops heating the aerosol-forming substrate, the atomized smoke gradually cools and is liquefied to generate aerosol-forming substrate during the long-term placement of the atomizer 10, and the aerosol-forming substrate may leak out of the atomizer 10 through the airflow passage. Alternatively, when the atomizer 10 heats the aerosol-forming substrate, the viscosity of the aerosol-forming substrate decreases when heated; after the atomizer 10 stops heating the aerosol-forming substrate, the aerosol-forming substrate that has not been atomized remains in the atomizer 10, and the aerosol-forming substrate may leak out of the atomizer 10 through the airflow passage. Alternatively, the aerosol-forming substrate in the atomizer 10 may leak out of the atomizer 10 through a poorly sealed location. The aerosol-forming substrate leaked out of the atomizer 10 may leak into the power supply unit 20 through the airflow passage, after the sensing passage 2111 is blocked by the aerosol-forming substrate, the normal operation of the power supply device 20 will be affected, thereby affecting the use by the user.

Specifically, in one embodiment, a filter element is provided in the filtering chamber 2112, the filter element is made of cotton or cotton cloth or other materials that are easy to intercept solids and/or liquids.

Specifically, the sensing passage 2111 is configured to conduct the physical characteristics and suction signals of the gas to the sensor 23, wherein the physical characteristics and suction signals of the gas include but are not limited to airflow or air pressure. When the sensor 23 detects the physical characteristics and suction signals of the gas, the power supply 24 in the power supply device 20 supplies power to the atomizer 10. Specifically, an atomizing chamber 173 that communicates with the through hole 221 and a smoke outlet passage 12 that communicates between the atomizing chamber 173 and the outside environment are provided in the atomizer 10. The sensor 23 is a pressure sensor, the air in the sensing passage 2111 is at least partially sucked out under the action of suction, the air pressure in the sensing passage 2111 decreases, and the pressure sensor senses this air pressure change, generates a trigger signal and sends it to the controller, such that the controller receives the trigger signal and controls the power supply 24 to supply power to the atomizer 10.

It can be understood that, in another embodiment, the sensor 23 is an airflow sensor. Specifically, the housing 211 is provided with a ventilation hole that communicates with the outside environment, the outside air flows into the sensing passage 2111 through the ventilation hole under the action of suction, the airflow in the sensing passage 2111 passes through the airflow sensor, the airflow sensor generates an airflow signal after sensing the airflow change, and after the airflow signal is transmitted to the controller, the controller controls the power supply 24 to supply power to the atomizer 10.

To sum up, since the sensing passage 2111 is separated from the filtering chamber 2112, the communication hole 2121 communicates with the sensing passage 2111 and the filtering chamber 2112, the through hole 221 is provided through the connecting end, the through hole 221 communicates with the filtering chamber 2112 and the airflow passage, the filtering chamber 2112 can prevent solids and/or liquids from entering the sensing passage 2111 through the communication hole 2121. Therefore, when the solids and/or liquids fall from the airflow passage, the solids and/or liquids in the aerosol generating device 100 can be prevented from flowing into the sensing passage 2111 through the filtering chamber 2112; thus, the solids and/or liquids are prevented from flowing into the sensing passage 2111 and contacting with the sensor 23 to cause the circuit of the sensor 23 to be short-circuited, thereby improving the service life of the sensor 23.

In this embodiment, the sealing member 22 is the connecting end used to connect with the atomizer 10, the sealing member 22 is configured to seal the opening of the power supply device 20 and divide the power supply device 20 into the inside of the power supply device 20 and the outside of the power supply device 20. The inside of the power supply device 20 is configured to place components such as the sensor 23 and the controller, and the outside of the power supply device 20 is configured to connect with the atomizer 10. Specifically, the side wall of the sealing member 22 abuts against the inner wall of the housing 211, such that the sealing member 22 is fixed in the housing 211. In addition, through the tight fit between the side wall of the sealing member 22 and the inner wall of the housing 211, the gap between the two can be sealed to prevent the aerosol-forming substrate from flowing into the interior of the power supply device 20 through the gap and affecting the use of the aerosol-generating device 100. Specifically, the sealing member 22 is made of a material with good sealing properties such as silicone or rubber. It can be understood that, in another embodiment, the sealing member 22 can also be integrally formed with the housing 211.

In one embodiment, the bracket 212 is provided with a barrier wall 2125, the barrier wall 2125 includes a first limiting portion 2122 and a second limiting portion 2123, the first limiting portion 2122 and the second limiting portion 2123 protrude upward from the bracket 212. The space between the first limiting portion 2122 and the second limiting portion 2123 forms a liquid storage cavity 2124. The liquid storage cavity 2124 is aligned with the through hole 221 in the axial direction of the atomizer 10. When the user holds the aerosol generating device 100 in a normal direction (i.e., the power supply device 20 is located under the atomizer 10), the aerosol-forming substrate in the aerosol generating device 100 can flow into the liquid storage cavity 2124 through the through hole 221. Thus, the aerosol-forming substrate in the liquid storage cavity 2124 can be cleaned by separating the atomizer 10 from the power supply device 20, which is convenient to operate.

Specifically, the first limiting portion 2122 and the second limiting portion 2123 are provided on the upper end surface of the bracket 212. The first limiting portion 2122 and the second limiting portion 2123 are formed by protruding upward along the axial direction of the housing 211. The first limiting portion 2122 and the second limiting portion 2123 are integrally formed with the bracket 212. It can be understood that, in another embodiment, both the first limiting portion 2122 and the second limiting portion 2123 are detachably connected to the bracket 212, and the detachable connection includes but is not limited to snapping connection or plugging connection.

Specifically, an upper end of the bracket 212 is provided with an upper plate 2120 located, between the sealing member 22 and the sensor 23. The first limiting portion 2122 and the second limiting portion 2123 protrude upward from the upper plate 2120 toward the sealing member 22. The communication hole 2121 is provided through the upper plate 2120. The sensing passage 2111 and the filtering chamber 2112 are communicated with each other through the communication hole 2121. The liquid storage cavity 2124 is formed by a space between the upper plate 2120, the first limiting portion 2122 and the second limiting portion 2123. The liquid storage cavity 2124 is aligned with the through hole 221 in the axial direction of the atomizer 10 and is located directly under the through hole 221, and the communication hole 2121 is located at one side of the liquid storage cavity 2124 and is therefore staggered from the through hole 221 in the axial direction of the atomizer 10.

It can be understood that, in another embodiment not shown, a liquid absorbing element is provided in the liquid storage cavity 2124, and the liquid absorbing element is used for absorbing the aerosol-forming substrate. The liquid absorbing element is made of a material with good adsorption properties such as cotton or cotton cloth.

In one embodiment, the bracket 212 is detachably connected to the housing 211 by means of snapping connection or plugging connection. In addition, in order to improve the connection stability, when the bracket 212 is connected to the housing 211, the bracket 212 can also be fixedly connected to the sealing member 22, and the fixed connection includes but is not limited to snapping connection or plugging connection. It can be understood that, in another embodiment, the bracket 212 and the housing 211 are integrally formed.

In one embodiment, the power supply device 20 further includes a USB (universal serial bus) charging structure 25 provided on the housing 211 and a PCB (printed circuit board) provided in the housing 211. The USB charging structure 25 and the PCB are electrically connected to the power source 24. The controller is mounted on the PCB. Specifically, the charging interface in the USB charging structure 25 passes through the housing 211 and extends to the outside environment. When the charging interface is activated, the power supply device 20 can be charged through the charging interface. It can be understood, in another embodiment, the sensing passage 2111 is in communication with the charging interface, the sensor 23 is a differential pressure sensor; under the action of suction, one side of the sensing passage 2111 facing the smoke outlet passage 12 generates negative pressure, and the other side of the sensing passage 2111 facing the USB interface is at normal pressure. As a result, a pressure difference is generated at opposite sides of the differential pressure sensor, thereby generating a suction signal, and then the suction signal is transmitted to the controller, and the controller controls the power supply 24 to supply power to the atomizer 10. When the user stops sucking, because the sensing passage 2111 is connected to the outside environment, the air pressure in the sensing passage 2111 is restored, the sensor 23 senses the restoration of the air pressure, and then generates a shutdown signal and sends it to the controller, the controller receives the shutdown signal and controls the power supply 24 to stop supplying power to the atomizer 10.

In one embodiment, in order to improve the air tightness of the sensor 23, a sensor sealing member 26 is sleeved on the sensor 23, and the sensor sealing member 26 is made of a material with good sealing performance such as silicone or rubber.

The upper end of the housing 211 is at least partially and detachably sleeved on the outside of the atomizer 10, so that the power supply device 20 and the atomizer 10 are detachably connected. The detachable connection includes but is not limited to snapping connection or plugging connection. The housing 211 is provided with an air inlet hole that communicates with the outside environment. The atomizer 10 includes a liquid storage assembly 101 and an atomizing assembly 102 provided with the atomizing chamber 173. The liquid storage assembly 101 includes a liquid storage member 13 and a venting member 14 provided in the liquid storage member 13. The inner cavity of the liquid storage member 13 is the liquid storage chamber 131 for storing the aerosol-forming substrate. The liquid storage member 13 is provided with a smoke outlet hole 132 communicating with the outside environment. The inner cavity of the venting member 14 is the smoke outlet passage 12. The smoke outlet passage 12 communicates with the atomizing chamber 173 and the smoke outlet hole 132. The atomizing assembly 102 can heat the aerosol-forming substrate flowing into the atomizing chamber 173 under the electric drive of the power supply device 20, and the smoke generated by heating the aerosol-forming substrate is mainly filled in the atomizing chamber 173.

Specifically, the smoke outlet hole 132 is provided at the upper end of the liquid storage member 13. The inner wall of the liquid storage member 13 extends downward along the axial direction of the liquid storage member 13 to form the venting member 14 located around the smoke outlet hole 132. The venting member 14 and the liquid storage member 13 are integrally formed. It can be understood that, in another embodiment, the venting member 14 and the liquid storage member 13 are detachably connected by means of snapping connection or plugging connection.

In one embodiment, the liquid storage member 13 is pre-packaged, i.e., the aerosol-forming substrate is pre-injected into the liquid storage chamber 131. After the aerosol-forming substrate is consumed up, the user can discard the liquid storage assembly 101 separately, because the liquid storage assembly 101 cannot be refilled with liquid.

The atomizing assembly 102 includes an atomizing upper cover 15 disposed in the liquid storage member 13, a base 16 located under the atomizing upper cover 15 and connected with the liquid storage member 13, and a heating structure 17 installed on the base 16. The heating structure 17 includes a liquid absorbing member 171 and a heating member 172, and the heating member 172 is in contact with the liquid absorbing member 171.

In one embodiment, the lower end of the liquid storage member 13 is an open end. The side wall of the atomizing upper cover 15 abuts against the inner wall of the liquid storage chamber 131 to seal the open end of the liquid storage member 13. The atomizing upper cover 15 is provided with at least one liquid guiding hole 151 communicating with the atomizing assembly 102 and the liquid storage chamber 131. It can be understood that, in another embodiment, the atomizing upper cover 15 can also be integrally formed with the liquid storage member 13.

In one embodiment, the base 16 and the liquid storage member 13 are detachably connected by means of snapping connection or plugging connection. It can be understood that, in another embodiment, the base 16 and the liquid storage member 13 are integrally formed.

In one embodiment, in order to improve the connection stability between the atomizing upper cover 15 and the liquid storage member 13, the base 16 is further detachably connected with the atomizing upper cover 15, and the detachable connection includes but is not limited to snapping connection or plugging connection and so on. For example, in this embodiment, the base 16 is snap-connected to the atomizing upper cover 15. It can be understood that, in another embodiment, the base 16 and the atomizing upper cover 15 can also be integrally formed.

After the power supply device 20 and the atomizer 10 are connected, the sealing member 22 is located under the base 16. The base 16 is provided with a flow-guiding hole 161 communicating with the atomizing chamber 173 and the through hole 221. Two electrode contact members 162 are arranged on the base 16 at intervals, one end of each of the two electrode contact members 162 is electrically connected to one of the two pins of the heating member 172, the other end of each of the two electrode contact members 162 is electrically connected to one of the positive and negative electrodes of the power supply device 20. Specifically, the two electrode contact members 162 are both made of conductive materials such as iron, cobalt or nickel, wherein one of the electrode contact members 162 is used as a positive contact, and the other electrode contact member 162 is used as a negative contact.

In one embodiment, a sealing ring 163 is sleeved on each electrode contact member 162 to prevent the aerosol-forming substrate in the atomizer 10 from leaking to the outside environment, and further prevent the aerosol-forming substrate in the atomizer 10 from flowing to the electrode contact member 162, to improve the connection stability between the electrode contact members 162 and the power supply device 20.

The heating member 172 may be disposed outside the liquid absorbing member 171 and/or inside the liquid absorbing member 171. When the aerosol-forming substrate in the liquid storage chamber 131 flows to the liquid absorbing member 171 through the liquid guiding hole 151, the liquid absorbing member 171 can gradually absorb the aerosol-forming substrate in the liquid storage chamber 131 and conduct the absorbed aerosol-forming substrate to the heating member 172. The heating member 172 is electrically connected to the power supply device 20. The heating member 172 is electrically driven by the power supply device 20 to heat the aerosol-forming substrate. The space in which the heating member 172 heats and atomizes the aerosol-forming substrate is the atomizing chamber 173. During suction, the outside air flows into the atomizing chamber 173 through the air inlet hole and the flow-guiding hole 161 in sequence to mix with the smoke, the smoke mixed with the air can flow out through the smoke outlet passage 12 and the smoke outlet hole 132 in sequence, so as to be sucked by the user. In this embodiment, the airflow passage is a passage constituted by the air inlet hole, the flow-guiding hole 161, the atomizing chamber 173, the smoke outlet passage 12 and the smoke outlet hole 132.

The liquid absorbing member 171 may be made of a porous material with a fixed shape and liquid-conducting ability. In one embodiment, the liquid absorbing member 171 is made of a porous ceramic material. The liquid absorbing member 171 made of porous ceramic material has many interconnected capillary pores. When the aerosol-forming substrate in the liquid storage chamber 131 is in contact with the liquid absorbing member 171, the aerosol-forming substrate is conducted along the surface of the liquid absorbing member 171. Specifically, when the surface of the liquid absorbing member 171 is permeated by the aerosol-forming substrate, the liquid absorbing member 171 will generate capillary action to absorb the aerosol-forming substrate to move into the capillary pores, thereby conducting the aerosol-forming substrate to the heating member 172. It can be understood that, in another embodiment, the liquid absorbing member 171 can also be made of a material that is easy to absorb liquid, such as cotton or cotton cloth.

The heating member 172 may be made of any material with electrical conductivity, such as stainless steel or nichrome. In one embodiment, the heating member 172 is a heating sheet, and the heating member 172 is disposed on the lower end surface of the liquid absorbing member 171 by sintering. Specifically, the liquid absorbing member 171 is made by printing the resistive paste in the ceramic body and then laminating and sintering by hot pressing. The heating member 172 is a printed resistive layer at the lower end surface of the liquid absorbing member 171. Since the heating member 172 is closely attached to the liquid absorbing member 171, the contact area between the heating member 172 and the liquid absorbing member 171 is improved. Further, since the contact area between the heating member 172 and the liquid absorbing member 171 is increased, the liquid absorbing member 171 can transmit the aerosol-forming substrate to the heating member 172 in time, to prevent the heating member 172 and the liquid absorbing member 171 from drying out due to small contact area. In addition, since the heating member 172 is sintered into the lower end surface of the liquid absorbing member 171, the assembly gap between the heating member 172 and the liquid absorbing member 171 is eliminated. The aerosol-forming substrate is prevented from accumulating in the gap, thereby preventing the heating member 172 from being unable to heat the aerosol-forming substrate accumulated in the gap in time, and accordingly preventing oil splashing.

In one embodiment, a liquid sealing member 18 is sandwiched between the atomizing upper cover 15 and the heating structure 17. The liquid sealing member 18 can improve the sealing between the atomizing upper cover 15 and the heating structure 17. Further, the liquid sealing member 18 can make the heating structure 17 evenly stressed and not easy to fail. In addition, the liquid sealing member 18 can also prevent rigid contact between the atomizing upper cover 15 and the heating structure 17 to affect the service life. Specifically, the liquid sealing member 18 is made of a material with good sealing properties such as silicone or rubber.

In the power supply device 20 of the present disclosure and the aerosol generating device 100 having the power supply device 20, since the sensing passage 2111 is separated from the filtering chamber 2112, the communication hole 2121 communicates with the sensing passage 2111 and the filtering chamber 2112, the through hole 221 is provided through the connecting end, and the through hole 221 communicates with the filtering chamber 2112 and the airflow passage, the filtering chamber 2112 can intercept solids and/or liquids from entering the sensing passage 2111 through the communication hole 2121; therefore, when the solids and/or liquids fall from the airflow passage, the solids and/or liquids in the aerosol generating device 100 can be prevented from flowing into the sensing passage 2111 through the filtering chamber 2112, so as to prevent the solids and/or liquids from flowing into the sensing passage 2111 and contacting with the sensor 23 to cause the circuit of the sensor 23 to be short-circuited, thereby improving the service life of the sensor 23.

The above-mentioned embodiments merely represent several implementations of the present disclosure, and the descriptions thereof are specific and detailed, but they shall not be understood as a limitation on the scope of the present disclosure. It should be noted that, for those of ordinary skill in the art, variations and improvements may still be made without departing from the concept of the present disclosure, and all of which shall fall into the protection scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be subject to the appended claims. 

What is claimed is:
 1. A power supply device for an aerosol generating device, the aerosol generating device comprising an atomizer and the power supply device, an airflow passage being formed inside the atomizer, wherein the power supply device comprises a power supply main body and a sensor, wherein a sensing passage, a filtering chamber and a communication hole are provided in the power supply main body, the sensing passage is separated from the filtering chamber, the communication hole communicates with the sensing passage and the filtering chamber, the sensor is disposed in the sensing passage, the sensor is configured to detect physical characteristics and suction signals of gas in the sensing passage, one end of the power supply main body is provided with a connecting end, the connecting end is configured to connect with the atomizer, a through hole is provided through the connecting end, the through hole communicates with the filtering chamber and the airflow passage, the filtering chamber is configured for preventing solids and/or liquids from entering the sensing passage through the communication hole.
 2. The power supply device according to claim 1, wherein the power supply main body comprises a housing, and a sealing member and a bracket provided in the housing, the sealing member is the connecting end, the through hole is provided through the sealing member, the sensing passage is provided inside the bracket, the bracket is arranged between the sealing member and the sensor, the communication hole is provided through the bracket, the communication hole is staggered from the through hole in an axial direction of the atomizer, the filtering chamber is formed by a space between the bracket and the sealing member.
 3. The power supply device according to claim 1, wherein a filter element is provided in the filtering chamber, and the filter element is made of a material that is easy to intercept solids and/or liquids.
 4. The power supply device according to claim 2, wherein the bracket is provided with a barrier wall, the barrier wall protrudes upward from the bracket, a space defined by the barrier wall is a liquid storage cavity, the liquid storage cavity is aligned with the through hole in the axial direction of the atomizer.
 5. The power supply device according to claim 4, wherein the barrier wall comprises a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion protrude upward from the bracket, the space between the first limiting portion and the second limiting portion forms the liquid storage cavity.
 6. The power supply device according to claim 5, wherein an upper end of the bracket is provided with an upper plate located between the sealing member and the sensor, the first limiting portion and the second limiting portion protrude upward from the upper plate toward the sealing member, the communication hole is provided through the upper plate, the liquid storage cavity is formed by the space between the upper plate, the first limiting portion and the second limiting portion.
 7. The power supply device according to claim 6, wherein the liquid storage cavity is located directly under the through hole, the communication hole is located at one side of the liquid storage cavity.
 8. The power supply device according to claim 6, wherein the sealing member is connected to the upper end of the bracket, and a side wall of the sealing member abuts against an inner wall of the housing.
 9. The power supply device according to claim 6, wherein a liquid absorbing element is provided in the liquid storage cavity.
 10. The power supply device according to claim 4, wherein a liquid absorbing element is provided in the liquid storage cavity, the liquid absorbing element is made of a material with good adsorption properties.
 11. The power supply device according to claim 2, wherein the power supply device further comprises a USB charging structure provided on the housing, and a controller, a PCB and a power source provided in the housing, the USB charging structure and the PCB are electrically connected to the power source, the controller is mounted on the PCB, the controller is electrically connected to the sensor.
 12. An aerosol generating device comprising the power supply device according to claim 1 and an atomizer electrically connected to the power supply device.
 13. The aerosol generating device according to claim 12, wherein the atomizer comprises a liquid storage assembly and an atomizing assembly, the liquid storage assembly comprises a liquid storage member and a venting member provided in the liquid storage member, the liquid storage member is provided with a smoke outlet hole that communicates with the outside environment, an inner cavity of the venting member is a smoke outlet passage that communicates with the smoke outlet hole, the atomizing assembly is arranged in the liquid storage member, an atomizing chamber is provided in the atomizing assembly, the atomizing chamber communicates with the smoke outlet passage.
 14. The aerosol generating device according to claim 13, wherein an inner cavity of the liquid storage member is a liquid storage chamber configured for storing aerosol-forming substrate, the atomizing assembly comprises an atomizing upper cover disposed in the liquid storage member, the atomizing upper cover is provided with a liquid guiding hole that communicates with the atomizing chamber and the liquid storage chamber.
 15. The aerosol generating device according to claim 14, wherein the atomizing assembly further comprises a base connected with the liquid storage member and a heating structure installed on the base, the heating structure comprises a liquid absorbing member and a heating member, the heating member is in contact with the liquid absorbing member, the space in which the heating member heats and atomizes the aerosol-forming substrate is the atomizing chamber, the base is provided with a flow-guiding hole that communicates with the atomizing chamber and the sensing passage. 